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理论物理通讯：英文版

Evolution of Two Non-identical Two-Level Atoms in Two-Mode Cavity Fields

Zhang, Ming Ming, Wang, Wen-Gang, Dai Dai, Hong-Yi, Xi Xi, Zairong

Published Jan 1, 2009• 1 citation
OpenAlex

Abstract

在这篇论文，我们在二模式的洞地里调查二个非相同的二水平的原子的进化。我们在一些起始的条件下面为二个非相同的二水平的原子表明死亡和纠纷的再生效果。二个非相同的二水平的原子的纠缠的状态能由纠缠的二模式的洞地被产生，这也被例示。当第一走进一步调查在二模式的洞地里操作二个非相同的二水平的原子的问题，这研究能被考虑。

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Some investigations have been made on the evolution of the linear entropies of atom-field system, in which two identical two-level atoms simultaneously interact with a single-mode dissipative cavity field under large detuning. The effects of the initial atom states and the dissipative factors of the cavity on all linear entropies are also discussed. The results show that the influence of the cavity decay constant on different kinds of Bell states is completely different, and the state |Ψ〉12 is a robust entangled state against the decoherence while the state |Φ〉12 is a fragile entangled state.

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在这篇论文，我们在二模式的洞地里调查二个非相同的二水平的原子的进化。我们在一些起始的条件下面为二个非相同的二水平的原子表明死亡和纠纷的再生效果。二个非相同的二水平的原子的纠缠的状态能由纠缠的二模式的洞地被产生，这也被例示。当第一走进一步调查在二模式的洞地里操作二个非相同的二水平的原子的问题，这研究能被考虑。
In this paper, we investigate the evolution of two non-identical two-level atoms in two-mode cavity fields. We demonstrate the death and rebirth effect of entanglement for two non-identical two-level atoms under some initial conditions. It is also exemplified that entangled states of two nonidentical two-level atoms can be generated by entangled two-mode cavity fields. This research can be considered as a first step to further investigate the problem of manipulating two nonidentical two-level atoms in two-mode cavity fields.
研究了双模腔场中两个偶极相互作用原子的辐射谱，详细讨论了双模腔场分别处于不同数态时的情形，发现其辐射谱具有如下特点：当两模腔场均处于真空态时，随着δ＝ｇa／ｇ的增加，辐射谱交替出现六峰、五峰结构，且在δ（＝３－１／２）很小时就出现了非对称五峰结构，与单模双原子情形相比较，更为灵敏地反映出原子间的偶极相互作用；当一腔场为真空场，另一腔场为强场时，辐射谱显示出对称的六峰结构，任意两对称峰的间距与(2ｎ2)１／２ｇ成正比；当
我们为通过和在大去谐的限制下面开始处于一个奇怪协调的状态准备的一块单个模式的洞地的二个二水平的原子的同时的相互作用产生一个二原子的簇状态建议一个物理计划。驱散常数，这块地的紧张和准备计划上的有瑕疵的操作的影响 reinvestigated。当洞的紧张足够大时，洞腐烂的影响高效地被压制，这被显示出。当在穿过洞轴的二个原子之间的时差是小的时，在簇状态的实现的可能的错误是可以忽略的。计划能被当前的技术认识到，这被建议。
Some investigations have been made on the evolution of the linear entropies of atom-field system, in which two identical two-level atoms simultaneously interact with a single-mode dissipative cavity field under large detuning. The effects of the initial atom states and the dissipative factors of the cavity on all linear entropies are also discussed. The results show that the influence of the cavity decay constant on different kinds of Bell states is completely different, and the state |Ψ〉12 is a robust entangled state against the decoherence while the state |Φ〉12 is a fragile entangled state.